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Diffstat (limited to 'net/phonet/pep.c')
-rw-r--r--net/phonet/pep.c35
1 files changed, 14 insertions, 21 deletions
diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index 5f32d217535..b6356f3832f 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -360,8 +360,6 @@ static int pipe_do_rcv(struct sock *sk, struct sk_buff *skb)
360 err = sock_queue_rcv_skb(sk, skb); 360 err = sock_queue_rcv_skb(sk, skb);
361 if (!err) 361 if (!err)
362 return 0; 362 return 0;
363 if (err == -ENOMEM)
364 atomic_inc(&sk->sk_drops);
365 break; 363 break;
366 } 364 }
367 365
@@ -716,8 +714,8 @@ static int pep_ioctl(struct sock *sk, int cmd, unsigned long arg)
716 return -EINVAL; 714 return -EINVAL;
717 715
718 lock_sock(sk); 716 lock_sock(sk);
719 if (sock_flag(sk, SOCK_URGINLINE) 717 if (sock_flag(sk, SOCK_URGINLINE) &&
720 && !skb_queue_empty(&pn->ctrlreq_queue)) 718 !skb_queue_empty(&pn->ctrlreq_queue))
721 answ = skb_peek(&pn->ctrlreq_queue)->len; 719 answ = skb_peek(&pn->ctrlreq_queue)->len;
722 else if (!skb_queue_empty(&sk->sk_receive_queue)) 720 else if (!skb_queue_empty(&sk->sk_receive_queue))
723 answ = skb_peek(&sk->sk_receive_queue)->len; 721 answ = skb_peek(&sk->sk_receive_queue)->len;
@@ -845,7 +843,7 @@ static int pep_sendmsg(struct kiocb *iocb, struct sock *sk,
845 struct msghdr *msg, size_t len) 843 struct msghdr *msg, size_t len)
846{ 844{
847 struct pep_sock *pn = pep_sk(sk); 845 struct pep_sock *pn = pep_sk(sk);
848 struct sk_buff *skb = NULL; 846 struct sk_buff *skb;
849 long timeo; 847 long timeo;
850 int flags = msg->msg_flags; 848 int flags = msg->msg_flags;
851 int err, done; 849 int err, done;
@@ -853,6 +851,16 @@ static int pep_sendmsg(struct kiocb *iocb, struct sock *sk,
853 if (msg->msg_flags & MSG_OOB || !(msg->msg_flags & MSG_EOR)) 851 if (msg->msg_flags & MSG_OOB || !(msg->msg_flags & MSG_EOR))
854 return -EOPNOTSUPP; 852 return -EOPNOTSUPP;
855 853
854 skb = sock_alloc_send_skb(sk, MAX_PNPIPE_HEADER + len,
855 flags & MSG_DONTWAIT, &err);
856 if (!skb)
857 return -ENOBUFS;
858
859 skb_reserve(skb, MAX_PHONET_HEADER + 3);
860 err = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len);
861 if (err < 0)
862 goto outfree;
863
856 lock_sock(sk); 864 lock_sock(sk);
857 timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT); 865 timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
858 if ((1 << sk->sk_state) & (TCPF_LISTEN|TCPF_CLOSE)) { 866 if ((1 << sk->sk_state) & (TCPF_LISTEN|TCPF_CLOSE)) {
@@ -896,28 +904,13 @@ disabled:
896 goto disabled; 904 goto disabled;
897 } 905 }
898 906
899 if (!skb) {
900 skb = sock_alloc_send_skb(sk, MAX_PNPIPE_HEADER + len,
901 flags & MSG_DONTWAIT, &err);
902 if (skb == NULL)
903 goto out;
904 skb_reserve(skb, MAX_PHONET_HEADER + 3);
905
906 if (sk->sk_state != TCP_ESTABLISHED ||
907 !atomic_read(&pn->tx_credits))
908 goto disabled; /* sock_alloc_send_skb might sleep */
909 }
910
911 err = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len);
912 if (err < 0)
913 goto out;
914
915 err = pipe_skb_send(sk, skb); 907 err = pipe_skb_send(sk, skb);
916 if (err >= 0) 908 if (err >= 0)
917 err = len; /* success! */ 909 err = len; /* success! */
918 skb = NULL; 910 skb = NULL;
919out: 911out:
920 release_sock(sk); 912 release_sock(sk);
913outfree:
921 kfree_skb(skb); 914 kfree_skb(skb);
922 return err; 915 return err;
923} 916}